#13623: join points produce bad code for stream fusion -------------------------------------+------------------------------------- Reporter: choenerzs | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 8.2.1-rc1 Resolution: | Keywords: JoinPoints Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by choenerzs): Pure conjecture: `$wfoldlM'_loop_s1U8` takes `SPEC` and should probably then not be a join point. On the other hand, the `vector` people probably need join points to happen if they want to remove `Skip` from from the `Step` data type. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13623#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler